(CNSNews.com) – The president of the Brady Campaign to Prevent Gun Violence accused National Rifle Association President Wayne LaPierre of being responsible for the Trayvon Martin shooting in Florida by “putting the gun in George Zimmerman’s hands.”

During a rally on Capitol Hill marking the five-year anniversary of the Virginia Tech massacre in which 32 people were killed and the eight-year anniversary on Friday of the Columbine High School shooting, Brady Campaign president Dan Gross called on Congress to “take simple action to stop arming dangerous people.” Also, on hand at the rally were victims of gun violence and their families.

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“Wayne LaPierre at the NRA Convention, in his feeble attempt to deflect the well-deserved blame for putting the gun in George Zimmerman’s hands, had the gall to complain about all the media attention on the Trayvon Martin tragedy. He asked, ‘What about the tragedies that occur every day in our nation?’” Gross said.

“Well, Wayne. Here they are – 32 of them – and they blame you and the politicians who do your bidding every bit as much as the media does. The fact is – not just the Trayvon Martin tragedy – but most of the gun violence in our nation could be prevented if Congress would take simple action to stop arming dangerous people,” he added.

“Arming dangerous people just to support a lobby that sells guns. That is shameful. It is immoral. It is almost criminal. That’s why we’re here in D.C., this week, to demand Congress make it abundantly clear whose vision they support – the NRA’s dark, paranoid vision of guns just about anywhere in just about anyone’s hands or our vision – an America where tragedies like ours and the 32 others that will occur today no longer happen,” Gross said.